Wide-range switching current source

OLIVA, ALEJANDRO RAUL; S. ANG,; A. AYMONINO,; H. CHIACCHIARINI,

San Nicolás

Congreso; X RPIC; 2003

In this paper a switching current source (CS) is designed that could output a current from 1µA to 1mA with a small amount of ripple, bounded to 1/20 of the desired DC output current. The part count is kept to a minimum and the switching frequency is limited up to 2 MHz, allowing the use of standard CMOS switches and keeping the switching losses low.